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4 Working Techniques
A Direction of fall
B Escape path (escape routes)
– Establish escape paths for each worker –
approx. 45° diagonally opposite to the direc‐
tion of fall
– Clear escape paths, eliminate obstacles
– Put down tools and equipment at a safe dis‐
tance – but not on the escape paths
– When felling, stand only to the side of the fall‐
ing trunk and only move back laterally onto the
escape path
– Plan escape paths on slopes parallel to the
slope
– When walking away along the escape path,
watch out for falling limbs and watch the top of
the tree.
Preparing work area at base of tree
– First clear the tree base and work area from
interfering limbs and brush to provide a secure
footing.
– Carefully clear the base of the trunk (e.g., with
an axe) – sand, stones and other foreign
objects will blunt the saw chain
– Remove largest buttresses: first the largest
buttress – saw first vertically, then horizontally
– only if the tree is in sound condition
0458-506-0121-C
4.3
Felling notch
Preparing the felling notch
C
The felling notch (C) determines the direction of
fall.
Important:
– Make a felling notch at right angle to direction
of fall
– Saw as close to the ground as possible
– Cut to a depth of approx. 1/5 to 1/3 of the
diameter of the trunk
Specify the direction of fall – without the gunning
sight on the shroud and fan housing
If the chain saw is designed without the gunning
sight on the shroud and fan housing, the direc‐
tion of fall can be determined or controlled using
a meter stick:
► Snap the meter stick in the middle and create
an isosceles triangle
► Position both ends of the meter stick in the
front trunk area (1/5 to max. 1/3 of the trunk
diameter) – align the tip of the meter stick in
the defined direction of fall
► Mark the trunk at both ends of the meter stick
to limit the felling notch
English
C
11
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